18
3: Operation
NOTE
: For distinguishing low pressure from absolute pressure, the
resolution for low pressure is in 0.1 cmH
2
O or mmHg and absolute
pressure measurement (
Section 3.4.13
) is displayed in resolution of
1 mmHg.
3.4.8
Peak Pressure
Peak gauge pressure from the low-pressure port of the High Flow
module during the inhalation cycle can be displayed on the bottom
line of the control module display. Select units of “PEAK cmH
2
O” or
“PEAK mmHg” by pressing and holding the DISPLAY UNITS key for
at least three seconds.
NOTE
: A valid flow cycle must occur for this value to be displayed.
See
Section 3.6
,
Breathing Cycles and Trigger Levels
, for details.
For best results check the zero on the low pressure transducer before
measurements. See
Section 3.5.1
for instructions on zeroing the
pressure transducer.
3.4.9
Peep Pressure
Positive end expiratory pressure (PEEP) from the low-pressure port
of the High Flow module can be displayed on the bottom line of the
control module display. Select
units of “PEEP cmH
2
O” or “PEEP
mmHg” by pressing and holding the DISPLAY UNITS key for three
seconds.
For best results check the zero on the low pressure transducer before
measurements. See
Section 3.5.1
for instructions on zeroing the
pressure transducer.
NOTE
: A valid flow cycle must occur for this value to be displayed.
See
Section 3.6
,
Breathing Cycles and Trigger Levels
, for details.
3.4.10 Breath Rate
The breaths per minute (BPM) can be displayed on the bottom line of
the control module display.
NOTE
: A valid flow cycle must occur for this value to be displayed.
See
Section 3.6
,
Breathing Cycles and Trigger Levels
, for details.
3.4.11 I:E Ratio
The ratio of the inhalation time and exhalation time (I:E RATIO) can
be displayed on the bottom line of the control module display.
NOTE
: A valid flow cycle must occur for this value to be displayed.
See
Section 3.6
,
Breathing Cycles and Trigger Levels
, for details.
